Power on from COLD/ keyboard indicator activates then shuts down after 4 secs system blue led ON continuously. No Video (blank screen)
Remove power/ Restore power computer boots normally and responds normally for the rest of the day including stop/starts.
BIOS updated and restored to latest iteration. might this be a hardware problem
No option to test power cord/adapter except off load voltage 19.4v DC
RAM: Crucial CT8G4SFS824A DDR4 2400 MT/s (PC4 19200) CL17 SR x 2 MEMTEST pass One memory stick test completed with basic config pass
Internal Disk: Samsung 960 EVO (500G) M2 PCI Express 3.0 x4 NVMe Samsung Magic pass
Currently problem is unresolved. Initial Start Cold Boot fail (Symptoms Keyboard Indicator ON Monitor black screen within 5 secs Fan heard within 10 secs No further progress. Immediate restart boot pass. Operation normal
Peripherals tested OK on a laptop: keyboard Mouse Monitor.
Since your NUC is working good (except the cold start), please ensure that it was completely switched OFF before you leave it for a night.
Please try the following procedure to perform full shutdown from Windows:
Step 1: Open Start menu, select Power button.
Step 2: Press and hold the Shift key on keyboard, while clicking on Shut down, and then release the Shift key to perform a full shutdown.
If after this shutdown, you will be able to power your NUC ON, the problem is in Windows setting.